diff options
Diffstat (limited to 'framework/Web/UI/TTemplateControl.php')
| -rw-r--r-- | framework/Web/UI/TTemplateControl.php | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/framework/Web/UI/TTemplateControl.php b/framework/Web/UI/TTemplateControl.php new file mode 100644 index 00000000..89bfe12f --- /dev/null +++ b/framework/Web/UI/TTemplateControl.php @@ -0,0 +1,215 @@ +<?php
+/**
+ * TTemplateControl class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright © 2005 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @version $Revision: $ $Date: $
+ * @package System.Web.UI
+ */
+
+/**
+ * include TTemplate class file
+ */
+require_once(PRADO_DIR.'/Web/UI/TTemplate.php');
+
+/**
+ * TTemplateControl class.
+ * TTemplateControl is the base class for all controls that use templates.
+ * By default, a control template is assumed to be in a file under the same
+ * directory with the control class file. They have the same file name and
+ * different extension name. For template file, the extension name is ".tpl".
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Revision: $ $Date: $
+ * @package System.Web.UI
+ * @since 3.0
+ */
+class TTemplateControl extends TControl implements INamingContainer
+{
+ /**
+ * template file extension.
+ */
+ const EXT_TEMPLATE='.tpl';
+ /**
+ * template cache file extension
+ */
+ const EXT_TEMPLATE_CACHE='.tpc';
+
+ /**
+ * @var ITemplate the parsed template structure shared by the same control class
+ */
+ protected static $_template=null;
+ /**
+ * @var ITemplate the parsed template structure specific for this control instance
+ */
+ protected $_localTemplate=null;
+ /**
+ * @var TTemplateControl the master control if any
+ */
+ private $_master=null;
+ /**
+ * @var string master control class name
+ */
+ private $_masterClass='';
+ /**
+ * @var array list of TContent controls
+ */
+ private $_contents=array();
+ /**
+ * @var array list of TContentPlaceHolder controls
+ */
+ private $_placeholders=array();
+
+ /**
+ * Constructor.
+ * Loads template for the control class if not loaded.
+ * Applies template directive if any.
+ */
+ public function __construct()
+ {
+ if(($tpl=$this->getTemplate(true))!==null)
+ {
+ foreach($tpl->getDirective() as $name=>$value)
+ $this->setPropertyByPath($name,$value);
+ }
+ }
+
+ /**
+ * @param boolean whether to attempt loading template if it is not loaded yet
+ * @return ITemplate|null the parsed template, null if none
+ */
+ protected function getTemplate($load=false)
+ {
+ if($this->_localTemplate===null)
+ {
+ eval('$tpl='.get_class($this).'::$_template;');
+ return ($tpl===null && $load)?$this->loadTemplate():$tpl;
+ }
+ else
+ return $this->_localTemplate;
+ }
+
+ /**
+ * Sets the parsed template.
+ * Note, the template will be applied to the whole control class.
+ * This method should only be used by framework and control developers.
+ * @param ITemplate the parsed template
+ */
+ protected function setTemplate($value)
+ {
+ $this->_localTemplate=$value;
+ }
+
+ /**
+ * Loads and parses the control template
+ * @return ITemplate the parsed template structure
+ */
+ protected function loadTemplate()
+ {
+ $template=Prado::getApplication()->getService()->getTemplateManager()->loadTemplateByClassName(get_class($this));
+ eval(get_class($this).'::$_template=$template;');
+ return $template;
+ }
+
+ /**
+ * Creates child controls.
+ * This method is overriden to load and instantiate control template.
+ * This method should only be used by framework and control developers.
+ */
+ protected function createChildControls()
+ {
+ if($tpl=$this->getTemplate())
+ $tpl->instantiateIn($this);
+ }
+
+ /**
+ * Registers a content control.
+ * @param TContent
+ */
+ public function registerContent(TContent $object)
+ {
+ $this->_contents[$object->getID()]=$object;
+ }
+
+ /**
+ * @return string master class name (in namespace form)
+ */
+ public function getMasterClass()
+ {
+ return $this->_masterClass;
+ }
+
+ /**
+ * @param string master control class name (in namespace form)
+ */
+ public function setMasterClass($value)
+ {
+ $this->_masterClass=$value;
+ }
+
+ /**
+ * @return TTemplateControl|null master control associated with this control, null if none
+ */
+ public function getMaster()
+ {
+ return $this->_master;
+ }
+
+ /**
+ * Registers a content placeholder to this template control.
+ * This method should only be used by framework and control developers.
+ * @param string ID of the placeholder
+ * @param TControl control that directly enloses the placeholder
+ * @param integer the index in the control list of the parent control that the placeholder is at
+ */
+ public function registerContentPlaceHolder($id,$parent,$loc)
+ {
+ $this->_placeholders[$id]=array($parent,$loc);
+ }
+
+ /**
+ * Injects all content controls (and their children) to the corresponding content placeholders.
+ * This method should only be used by framework and control developers.
+ * @param string ID of the content control
+ * @param TContent the content to be injected
+ */
+ public function injectContent($id,$content)
+ {
+ if(isset($this->_placeholders[$id]))
+ {
+ list($parent,$loc)=$this->_placeholders[$id];
+ $parent->getControls()->addAt($loc,$content);
+ }
+ }
+
+ /**
+ * Performs the OnInit step for the control and all its child controls.
+ * This method overrides the parent implementation
+ * by ensuring child controls are created first,
+ * and if master class is set, master will be applied.
+ * Only framework developers should use this method.
+ * @param TControl the naming container control
+ */
+ protected function initRecursive($namingContainer)
+ {
+ $this->ensureChildControls();
+ if($this->_masterClass!=='')
+ {
+ $master=Prado::createComponent($this->_masterClass);
+ if(!($master instanceof TTemplateControl))
+ throw new TInvalidDataValueException('tplcontrol_required',get_class($master));
+ $this->_master=$master;
+ $this->getControls()->clear();
+ $this->getControls()->add($master);
+ $master->ensureChildControls();
+ foreach($this->_contents as $id=>$content)
+ $master->injectContent($id,$content);
+ }
+ parent::initRecursive($namingContainer);
+ }
+}
+
+?>
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